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Add, subtract, multiply and divide by (2,5,5,9,9) to obtain 95. There can be fractions, decimals.
5*(2+9+9)-5
Mathematical simplicity 1.(Four out of nine + one and five out of seven + six out of eleven)÷(three out of eleven + six out of seven + two out of nine) 2. One in 2008+ two in 2008+ three in 2008+ four in 2008+…… 2007 Out of 2008 3.1 1/2+2 1/2+3/12+4/20+5/30+6/42+7/56+8/72+9/90+10/10 4. (252525×252252)÷(525525×525252) 5. 9999×2222×3333×3334 6. 2+5+8+11+14+…… +56+59 7. 1998×20092009-2009×19981998 8.1×6/1+6×11/1+11×16+…… +51×56 Part 9. (2+4+6+…… +96+98+100)—(1+3+5+…… +95+97+99) 10.1×3/1+3×5/1+5×7/1+…… +99×101Th [Note... Is to omit the middle number and give the answer before the score
1 Question:(4/9+1+5/7+6/11)÷(3/11+6/7+2/9)=(4/9+12/7+6/11)÷(3/11+6/7+2/9)...... Convert band score into false score.=2×(3/11+6/7+2/9)÷(3/11+6/7+2/9)=22 Title:1/2008+2/2008+3/2008+4/2008+…… 2007/200...
Mathematical statistical probability Five people divided into four posts, at least one person each. How many methods? 1. C (5)2a (4)4=120, two persons are selected as one group, totally four rows 2. A (5)4*4=480, four rows out of five, one reserved with four posts Which is correct? Mathematical statistical probability Five people divided into four posts, at least one person each. How many methods? 1.C (5)2a (4)4=120, two persons are selected as one group, totally four rows 2. A (5)4*4=480, four rows out of five, one reserved with four posts Which is correct?
1. Correct;2. There are duplicates: for example, if you select abcd, ae, b, c, d will appear; if you select ebcd, ea, b, c, d will appear, which is the same as the former.
A=40b/b-60 to 0.6a+0.35b≤22
Because a=40b/b-60
(1) A=-20
(2) Take a=-20 into 0.6a+0.35b≤22 to find b
0.6×(-20)+0.35B≤22
0.35B≤22+12
B≤34÷0.35≤3400/35≤680/7
Get: a=-20b≤680/7
The first month's turnover was 7452 yuan and the electricity bill was 1678. The second month's turnover was 9,375 yuan and the electricity bill was 2,500 yuan. How much is the average monthly daily turnover and how much does it cost? What's more, how much is the ratio of turnover to electricity, or how much is the electricity for selling 1000 yuan? Turnover for the first month was 7,452 yuan and the electricity bill was 1,678. The second month's turnover was 9,375 yuan and the electricity bill was 2,500 yuan. How much is the average monthly daily turnover and how much does it cost? What's more, how much is the ratio of the turnover to the electricity charge, or how much is the electricity charge for selling 1000 yuan?
Average Monthly Turnover:(7452+9375)/2=8413.5 Average Monthly Daily Turnover:8413.5/30=280.45 Average Monthly Tariff:(1678+2500)/2=2089 Average Monthly Daily Tariff:2089/30≈69.63 Ratio of Turnover to Tariff:8413.5:280.45=30:1(This step...
Mathematical calculation (-0.5)+3+1/4+(-5+1/2)+(+6)
(-0.5)+3+1/4+(-5+1/2)+(+6)
=-0.5+13/4 -11/2 +6
=13/4+6-1/2-11/2
=13/4+6-(1/2+11/2)
=13/4+6-12/2
=13/4+6-6
=13/4
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